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Multiplying Decimals Worksheet

Speed calculation lesson 18: Decimal × decimal · Set 718 · 40 questions
TalentJR

The fast method (Count the places): Forget the points and multiply the whole numbers: 2.5 × 1.4 → 25 × 14 = 350. Count the decimal places in both numbers: 1 + 1 = 2. Put the point that many places from the right: 3.50 — then drop the 0 at the end: 3.5.

NameDateTime takenScore ___ / 40
  1. 1.3.8 × 0.08 =
  2. 2.0.08 × 1.3 =
  3. 3.0.94 × 3.9 =
  4. 4.0.4 × 1.1 =
  5. 5.9.2 × 3.4 =
  6. 6.2.4 × 0.25 =
  7. 7.0.86 × 2.3 =
  8. 8.2.6 × 1.5 =
  9. 9.0.57 × 1.8 =
  10. 10.0.83 × 2.1 =
  11. 11.0.83 × 0.9 =
  12. 12.5.3 × 0.08 =
  13. 13.0.17 × 2.8 =
  14. 14.9.8 × 2.3 =
  15. 15.0.96 × 1.1 =
  16. 16.4.5 × 2.1 =
  17. 17.0.94 × 3.9 =
  18. 18.2.9 × 2.1 =
  19. 19.0.48 × 2.6 =
  20. 20.0.18 × 0.8 =
  21. 21.5.5 × 0.6 =
  22. 22.8.5 × 2.5 =
  23. 23.7.1 × 0.21 =
  24. 24.0.33 × 0.2 =
  25. 25.6.1 × 1.3 =
  26. 26.0.39 × 1.1 =
  27. 27.0.29 × 0.3 =
  28. 28.0.26 × 2.7 =
  29. 29.1.8 × 3.7 =
  30. 30.0.35 × 2.2 =
  31. 31.7.4 × 1.2 =
  32. 32.0.71 × 2.5 =
  33. 33.3.1 × 0.04 =
  34. 34.2.8 × 1.2 =
  35. 35.3.7 × 0.02 =
  36. 36.0.24 × 2.8 =
  37. 37.0.82 × 3.1 =
  38. 38.5.7 × 1.4 =
  39. 39.0.29 × 1.1 =
  40. 40.8.2 × 0.02 =

Answer key

  1. 0.304
  2. 0.104
  3. 3.666
  4. 0.44
  5. 31.28
  6. 0.6
  7. 1.978
  8. 3.9
  9. 1.026
  10. 1.743
  11. 0.747
  12. 0.424
  13. 0.476
  14. 22.54
  15. 1.056
  16. 9.45
  17. 3.666
  18. 6.09
  19. 1.248
  20. 0.144
  21. 3.3
  22. 21.25
  23. 1.491
  24. 0.066
  25. 7.93
  26. 0.429
  27. 0.087
  28. 0.702
  29. 6.66
  30. 0.77
  31. 8.88
  32. 1.775
  33. 0.124
  34. 3.36
  35. 0.074
  36. 0.672
  37. 2.542
  38. 7.98
  39. 0.319
  40. 0.164

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